Manufacturer Series: S7-200 Series
Number of Inputs: 8
Number of Outputs: 8
Input Type: Digital
Output Type: Digital
Compatible with: S7-200 Series
Voltage Category: 24 V dc
Module Type: I/O Module

Expansion modules cannot be used with S7-221. Combination module. The SIMATIC S7-200 expansion modules contain the same number of digital inputs and outputs and are available with either transistor or relay outputs.